The innovation phenomenon of local practice moving towards national policies mainly occurred in the fields of economic and livelihood reform in the early stages. In recent years, some local environmental governance practices with significant performance have been incorporated into national policies, forming a distinctive phenomenon of bottom-up innovation and diffusion. Currently, local practices in environmental governance have formed multiple types of distribution, including leveraging resources and meeting livelihood needs on goal oriented dimension, single and multi exploration on saptial scope, smooth and tortuous on spatial scope. The local practice towards national policies has a spatiotemporal characteristic that originated mostly in the eastern region and tends to shrink from exploration to comprehensive diffusion. Governance performance is the basis for the improvement of local environmental governance practice, but it is only a prerequisite. There is a structural driving mechanism for innovation diffusion and the academic community needs to explore the overall connection mechanism between local practices and national policies. Actually, it is rooted in the institutional demand for national environmental governance, the co-opetition mechanism of local governments,the benign interaction between the upper and lower levels of the system, the advisory effect of the People’s Congress and the CPPCC, and the publicity effect of the academic and media circles. Deepening the research on the generation logic of bottom-up environmental policies can help promote the knowledge production of local environmental sociology. However, the political and academic circles also need some cold thinking in view of the innovation upsurge of grassroots environmental governance mechanism.